Cash-register.



T. CARROLL, CASH REGISTER. APPLICATION FILED JUNE 4, 190a. RENEWED APR.2, 1906.

Patented Aug. 16, 1910.

5 BHEBTB-SHEET 1.

JUL

T. CARROLL. CASH REGISTER.

APPLICATION FILED JUNE 4, 1903. RENEWED APR. 2, 1906.

Patented Aug. 16,1910.

5 SHEETS-SHEET 2.

T. CARROLL. CASH REGISTER I APPLICATION FILED JUNE 4, 190a. RENEWED APR.2, 1906.

Patented Aug. 16, 1910.

5 SHEETS-SHEET 3.

Him/b12145 6%wem-boz M T. CARROLL.

CASH REGISTER. APPLICATION FILED JUNE 4, 1903. RENEWED APR. 2, 1906.

Patented Aug. 16,1910.

T. CARROLL.

CASH REGISTER. APPLICATION FILED JUNE 4, 1903. RENEWED APR. 2, 1906.

967,496. Patented Aug. 16, 1910.

5 SHEETSSHEET 5.

EELE Fall UNITED STATES PATENT OFFICE.

THOMAS CARROLL, F DAYTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THENATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A. CORPORATION OF OHIO,

(INCORPORATED IN 1906.)

CASH-REGISTER Specification of Letters Patent. Application filed June 4,1903, Serial No. 160,025. Renewed April Patented Aug. 16, 1910.

2, 1906. Serial No. 309,353.

v To all whom 'it may concern:

Be it lmown that I, THoMAs CARROLL, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and use- Improvements in Cash -Registers, of whichI declare the following to be a full, clear, and exact description.

My invention relates to certain new and useful improvements in cashregisters and has more particular reference to improvements in theconstruction of the various parts of these machines, such as thetransfer mechanism, the full stroke device, the turn-tozero mechanism,and other devices which will be more particularly described hereafter.

I have shown and described my inventions and improvements as applied tothe type of cash registers set forth in my co-pending'application,Serial Number 52,47 9, filed March 23,1901.

In the accompanying drawings forming part of this specification: Figure1 repretional views of the transfer devices.

frame of the machine, 2 the sents a top plan view of the machine withthe casing removed. Fig. 2 represents a section taken on the line 2-2 ofFig. 1. Fig. 2" represents a detail perspective view of the transferpawls and trip pawls. Fig. 3 represents a section taken on the line 33of Fig. 1. Fig. 4 represents a detail per-- spective view of the fullstroke device and the mechanism for shifting the key-coupler. Fig. 5represents a section taken on the line 55 of Fig. 1 showing the casingand the locks for the turn-to-zero device. represents a detail end viewof the showing the turn-to-zero devices. represents a sectionalelevation of Fig. 6 counter Fig. 7 the same looking from the oppositeend from Fig. 6.

Fig 8 represents a detail of the turn-to-zero evice. Figs. 9 and 10represent detail see- Fig. 11 represents a detail vertical section, onthe line 1010 of Fig. 1, of the bell and the bell.

stop mechanism. Fig. 12 represents a modi fication of the turn-to-zerodevices.

In the aforesaid drawings, 1 represents the 0 rating keylevers and 3 theindicators. T e key-levers 2 (see Fig. 2) are hung upon a transverseshaft 5 and are provided at their forward or lettered or banks. in theusualmann'er in units of same construction, I shall describe only onebank. The key-levers are formed at their rear ends with graduatedvertical standards 6 and each lever when in normal position rests withits rear end upon a transverse rigid supporting-bar 7 and is adapted tosupport an indicator stem 8 which rests upon said lever. These indicatorstems have upon their upper ends the .usual tablet indicators 3 whichare marked on. both sideswith figures corresponding with the value ofthe key upon which they rest.

Each key-standard 6 has formed in its front edge near its base akey-coupler notch or recess 16 and near its upper end a registeringnotch or recess 17. The key-coupler notches are adapted to engage a bar18 mounted in a key-coupling frame 19'Wl 110l1 is fast upon a rock-shaft20. The pivot points pf the key-coupler and the keys respectively, areso located in relation to each other that when the keys are operated thecoupler will be swung upward and the rod 18 caused to enter thekey-coupler notches of the operated keys and thus look all of suchoperated keys to the coupler. The registering notches 17 of the keys ofeach bankare located at different distances from a horizontal rod 22 ofa register-operating rock-frame 23 according to the value of theirrespective keys, and the lower wall of each of said notches projectsbeyond'its up,- per wall so that when the key is operated said lowerwall will engage and l ft s a1d rod. It is evident that theseregistering notches need not be of it being only necessary that they bearranged to engage the register-operating rock-frame 23 and lift it theproper distance according to the value of-the particular key operated.For convenience, the register-operating rock-frames with theirrespectlve segments hereinafter described will hereafter be referred tosimply as registering segments.

There areyof course,. (see Fig. 1) three registering segments 'oneforeach bank of keys and they are alljournaled upon a rocking-framecomprising a transverse swln ing-shaft 24 (see Figs. 2 and 5) the endsof which are secured initwo supports or side arms 25, which are pivotedupon the shaft any particular form,

5. Since the rocking-frame which comprises these two said arms 25 andthe swinging-shaft 24 operates to bringthe register: ing segments intoand out of engagement 5 with the counter, I shall hereinafter refer toit for convenience as the counter-engaging-frame. It will be readilyunderstood that the registering-frames are all pivoted upon the swingingshaft of the counter'engaging-frame. Each registering-frame is supportedin its lower normal position by a stop-lug 23 (shown in dotted lines inFig. 2) fast to the shaft 24. Each registering frame comprises asegmental rackplate or segment 26 located at one end and is normallydrawn down to its lower retracted position by a hook shaped drag-bar 27pivoted thereto as at 27 and cooperating with k the bar 18 of thecoupler. When one of the 20 registering-frames 23 is raised by a key, it

becomes coupled to said key to prevent overthrow, by its bar 22 passinginto the registering notch 17 of the operated key in much the samemanner that the coupler-bar passes 25 into the key-coupler notch. As theregister ing notches are located at different distances from the bar 22it will be seen that the different keys will engage and move said bardifferent distances and thus rock the regis-. tering-framescorrespondingly. The segments thus make movements corresponding 1n valueto the value of the operated keys, which movements are transmitted tothe 'counter-wheels in a manner hereinafter described.

Eachregistering frame is normally locked in its lowermost'position byone of a series of three latch-arms 28 one for each bank of keys. whichare mounted. loosely on a normally forced forward to bring their notchedlocking ends 30 over the respective rods 22 by'coil' springs 31interposed be.--

tween said latch arms and the main frame. Each latch-arm is alsoprovided with a transverse unlocking bar 32 projecting to each side andarranged to be struck by the upper edges of any one of the standards 6to throw the latch-ar back out of the path of the bar 22 and t us unlockthe corresponding registering-frame. The initial movement of any key,therefore, unlocks its corresponding registering frame.

As before mentioned the haft 24 which supports the registering-frames ismounted in supports or arms 25 and each of these arms 1s ivoted upon theshaft 5, and is provided with a laterally projecting anti-frictionroller 33 as shown in Fig. 5. These rollers are arranged to be engagedand forced upward by counter-engaging camdisks 34 mounted on shaft 20and fast to and movable withthe key-coupling frame 19. As thekey-coupler moves upward the anti-friction rollers are forced upward andtransverse shaft 29 (Figs. 2 and 3), andmovement of the key-lever 5, andthe shift-.

forward out of cam notches 35 formed in said counter-engaging cam-diskswhich action brings the rack-segments 26 into mesh with the counterpinions 69 hereinafter described. This counter-engaging movement 7 ofthe rack-segments precedes their rocking or registering movements. Assoon as the segments have completed their registering movements they aremoved backward with and by the counter-engaging frame because 7 of thelateral or transverse shifting of the key-coupler 19 and thecounter-engaging cams 34, which shifting causes the said cams to passlaterally out from under the antifriction rollers 33 so that saidrollers, the 30 counter-engaging frame and the registering frame dropback into disengaged position. This lateral shifting movement of thekeycoupler frame, the counter-engaging-cams and the shaft 20, which lastsimply slides in 35 7 camming arm 37 adapted to engage the bev- 9 eledsurface of a canr collar 39 which isfast upon the shaft 24. There isalso fast to andrextending upwardly from the key-coup- V ler 19 a secondcamming arm 38, adapted to engage the beveled surface of a second andsimilar cam collar ,40 which is also fast upon the shaft 24. Upon theupward movement of thekey-coupler the arm 37 strikes the beveled surfaceof the collar 39 and the keycoupler is thereby forced laterally to theleft; and near the end of the downward movement of the key-coupler thearm 38 comes in contact with the beveled surface of the cam collar- 40and the key-coupler is thereby forced laterally to the right and isthereby carried back to its normal posltion, It is, ofcourse'understoodthat this lateral shiftingofthe'key-coupler to the left takes place atthe end of the initial downward ing to the right takes place at the endof the final upward movement of the keys. As soon as the key-coupler hasbeen shifted to the left in the manner just described, the

counter-engaging-eams 34 are shifted from 11 beneath the anti-frictionroller 33,'but at this point the arm 37 has come in contact with theshaft 24 and this arm thereby serves to support the shaft 24 and thecounter-engaging-frame 25 in its upward position; and then as thearm 37moves downward: with the key-coupler, the shaft 24 resting upon it movesdownward with it until the shaft'24 comes in contact with thelowersurface of its enlarged bearing 24 12 formed in the side framesof'the machine v (see Fig. 2), and the counter-engagingframe 25 therebyrests in its lowest position while the key-coupler 19 and the supportingarm 37 continue in their downward supporting arm.- A duplicate series ofthese 'camming arms. and cam collars may be placed at the left-hand endof the machine, to insure greater certainty of movement.

It will be readily understood that the various parts which are hereindescribed as secured to and movable laterally with the key-coupler,might well be secured to and moved by anyother member ofthe machine.

- organization which has a uniform movement at each operatlon of themachine.

The general'operation of the mechanism thus described is therefore asfollows: The

initial movement of any key turns the counter-engaging-cams in thedirection of the arrow (Fig. 2) .and thereby the counter-engaging-frameis raised, throwing all the segments into engagement with theirrespective counter-wheels. The segments are held thus engaged during theentire downward or initial stroke of the keys, during which time thesegment-frames are engaged by the key standards and swing upon theirshaft 24 so as to turn the respective counter-wheels according to the,value .of the operated keys.

At the very end of the downward movement of the keys the key-con lerframe and the various memberssecure thereto, including the counter-enaging-cams, are'shiftedlaterally to the le tand the cams pass out fromunder the rollers 33. The counter-engagingframe and theregistering-frame carried thereby do not, however, drop immediately, asthe pressure on the operated key holds the registering-framesinengagement with the counter pinions and thereby sustains thecounter-engaging-frame in its upper position. The instant, however, thatthe pressure upon the key is relaxed to permit it to begin its return.movement, the registering frames dro out of engagement with the counterpimons and the counter-engagingframe then drops with its supportin arm37 until the shaft 24 rests in the bed 0 the en larged bearing 24%. Thekey-coupler continues its downward movement, and at the end of thisdownward movement is again shifted laterally-to its normal ositionwiththe earns 34 again below the ro lers 33.

The segmentsfr emain out of en with the counterpinions during t e entirereturn movement of the operated keys, so that the rear ends of said keysin swmgmg downward, firstreturn the segments to normal position, thatis,'until the registering frames contact with 'their stop-lugs 23,

whereupon the latch-arm's 28 spring into position to lock the se ents.As soonas the registering frames are thus stopped the keys swing out ofengagement therewith and return to normal position. i

The mechanisms and o ration hereinbea fore set forth and desc'ri d, are,with the gement exception of the particular means for shifting thekey-coupler, the same as described in ceed to describe,

F ull stroke me0lzam'sm-.The full stroke device, to compel a completemovement of the operated key in both directions, is shown best in Fig.4. Fast upon one end of the key-coupler is'a segment plate or rack 210having arrester teeth 211, which rack may for convenience be called themain arrester rack, Secured to the side of this main arrester rack is anauxiliary arrester rack 212, Pivoted upon a stub-shaft 213 extendingfrom the-main frame of the machine are two main'arrester pawls215 and216 and situated alongside of them is an auxiliary arrester pawl 217.These three pawls are adapted to beheld in engagement with theirrespective vracks'by means of springs num bered 216., 217 The'pawl215.1ies normally in lateral alinement with the main arrestenrack 210and the pawl 216 lies normally out of lateral alinement with said rack;and on the upward movement of the key-coupler the pawl 215 engages therack to hold it from a retrograde movement.

Upon the shifting of the key-coupler in the manner before described,this main rack 210 is'shifted out of lateral alinement with the pawl 215and. into lateral alinemeu't with the pawl 216, which pawl then engagessaid main rack on the downward movement of the key-con ler and preventsretrograde. movement 0 the same. It is thus seen that this arrestingmovement of the key-coupler in its two opposi@ directions of movement iseffected by having a single arrester-plate which is shifted with thekey-coupler from one arrester awl to another. With this arrangement oshifting the main arrester-rack from one pawl to another, it mightpossibly, hap en that the key-coupler for some reason won (1 beprematurely shifted, in which case the rack 210 would be shifted out ofengagement with the pawl 215 before the keycoupler hadjreached the limitof its upward movement, and consequently before the key lever hadreached thelimit of its downward movement; and-if the key were thenreleased it would be to return .to its normal upward position withouthaving completed its full downward stroke, and therefore without havingim arted to the registering segments the ful movementof registration..-I

It is the purpose of-the auxiliary arrcster and pawl to prevent such anoccurrence whetherit be by accident orby'intentional manipulation by theclerk. The auxiliary arrester rack 212 is shorter in extent than towardthe end of the upward stroke of the key-coupler; and when-rthekey-coupler is just ready to shift to the left, the pawl 217 is still ine gement with the rack 212; and the teeth on this rack are made of suchwidth that the pawl 217 will slide laterally:

over them and Still remain engaged with them during the lateralsliifting movement of said rack to the left with the key-coupler.Whenthis shifting movement has been completed, it is obvious that, asbefore described, the main rack 210 is no longer in lateralalinementwith the main pawl 2l5 and the pawl 215 is therefore free fromengagement with said rack and is not performing any arrestingfunctions';but the downward extent of the auxiliary rack 212 is suchthat while the-key-coupler isshifting, and after .it has been shifted,the pawl 217 is still in engagement with its rack 212 and the keycouplermust therefore be raised to the limit -it is engagement "therewith butthis is a nere incident of the construction and is not essential, sincethe arresting function dur- 'ing this downward movement of thekeycoupler is performed by the pawl 216, as before described. It is tobe understood that this auxiliary pawl and rack need not be necessarilysituated and, constructed as I,

have shown and described themfbut other forms of device may be usedprovided that the auxiliary arrester pawl is brought into engagementwith its rack before, or as soon 3 as, the main pawl has been freed fromengagement with the'main rack, and the auxiliary' rack is of such extentas then to compel a complete upward movement ,of the key coupler.Another meansv of compelling a complete upward movement of thekeycoupler even after theshi fting has taken place would be to have asingle pawl adapted to act in both directions in a wellknown manner, andto have all the teeth 211 on the rack 210 widened so that this pawlwould remain in engagement with the teethrejgardless of the shiftingmovement; but, in such a device, when the pawl arrived at the end ofthe'rack and dropped off ready to engage the rack on the downwardmovement, there would be a certain 'interval before the rack would againengage the pawl in this downward movement,- and this interval wouldleave the machine open for macameo nipulation. By the use of thisauxiliary pawl, the key-coupler must be given its full upwardstroke andthen the main pawl 216 is in position to engage the main rack 210immediately upon the beginning of the downward movement of thekey-coupler.

Transfer mechaniem.The registering segments 26'co5perate with thecounter pinions 69, 7 0 and 71 which are actuated by the respectivebanks of keys, to turn them forward; they then becomedisengagedtherefrom. (See Fig. 1). The pinion 69 of the units-of-centswheel 72 is mounted fast upon one end of theunits-of-cents shaft 7 3which is suitably journaled in the main frame. Various counter wheelsare mounted upon the counter shaft 74 (Fig. 6) which shaft is suitablyjournaled in the counter frame and is in line with and preferably ofthe'same size as the units-of-cents shaft 73 so that their ends abut.The right-hand end of this counter shaft 74 pro ects through the wheel72 and partly into the ratchet wheel 75 which is fast "to said counterwheel. The counter wheels 76 and 77 are journaled upon the shaft 74 andare secured to and carried by the gears and 71. Each counter pinion 70and 71 is also provided with a ratchet wheel 78 similar to wheel 7 5.Each ratchet wheel is engaged by a spring pressed retaining-pawl 79suitably mounted on the counter frame, so as to prevent any backwardrotation of the counter wheels.

- The transfer from counter wheel 72 to counter wheel 76 and from thelatter to the upon a spring pressed trip latch 7 7 a (see Figs.

2 and 2 which trip latch is pivoted at 77 upon the transfer pawl 80.This transfer pawl 80 is pivoted as at 250 to a lever 251- pivoted tothe main frame at 252. This lever 251 has tworearwardly projecting arms253 and 254, the upper arm 254 being slightly bent so as to be out oflateral alinement with the arm 253. These arms are adapted to co-'operate with an arm 255 fast upon the keycoupler shaft 20 which armcarries at its outeredge a pin 256. 1 On the upward movement of the keycoupler, the arm 255 moves downward, and its outer surface contactswith. the arm 253 carrying said arm downward. and thereby rocking thelever 251 about its pivot 252 carrying the transfer pawl 80 rearward tothe position shown in Fig. 9. In both this rearward position and in itsnormal forward position as. shown in Fig. 2, the transfer pawl 80 isheld from engagement with its counter wheel by the abutting of ashoulder v260 on the trip latch 77 against a stationary transverse -rod261,

and said trip latch is constrained to its p0- ,SltlOIl of engagementwith said rod by a spring 77 extending between the latch and thetransfer pawl 80. But when the counter wheel has made a complete,revolution, the pin 80 contacts with the nose 76 and forces the triplatch 77 out from engagement with the transverse bar 261 and thetransfer pawl 80 is thereupon forced upward by the spring pressedplunger 262' into engagement with its counter wheel, which position isshown in Fig. 10. This occurs during the down stroke of the arm 255 andwhen the-pawl 80 has moved to its rearward position; and at the end ofthe down stroke of the arm 255 the key-coupler is shifted and the arm255 is thereby carried out of cooperative alinement with the arm 253 butthe pin 256 is thereupon brought into alinement with the arm 254 andcontacts with the same on the up stroke of the arm 255, whereupon thelever 251 is carried into its normal forward position and the transferpawl 80 is moved forward sufliciently to turn the counter wheel onenotch. On the transfer pawl resumingiits normal forward position, thetail 77 of the trip latch 77 strikes against the inclined abutment 77rising from the base of the counter frame, and the trip latch againresumes its normal position with the notch 260 under the bar 261 and inthis re-cocking of the trip latch the spring 7 '7' also aids. coursethere is a transfer arm and a transfer pawl for each of the wheels 76and 77 and the pins 256 are so arranged that they contact with theirrespective arms 254 successively in such manner as to cause theoperation of the transfer pawls successively in the usual manner. It isthus apparent that the transfer pawl and the trip latch are normally outof operative position with respect to the tripping mechanism, but thatthey are reciprocated into operative position upon the initial movementof the keys and then withdrawn to their normal position.

Incash registers as heretofore constructed much trouble has been met onaccount of the factthat the transfer pawl, when a registration is madewith unusual violence, would be prematurely tripped. For example, incase the amount to be recorded would normally and properly bring theregistering wheel to its 9 position and thereby its tripping pin wouldbe only one notch from transferring position, then in such a case, ifthe machine is operated violently, the registering wheel will beslightly overthrown beyond its 9 position, and although not far enoughto assume its zero position, its tripping pin, however, would strike thetripping nose of the trip latch with force enough to send the trip latchahead of the tripping pin in such manner as to trip'the transfer pawlprematurely and therefore the amount would be improperly registered. Iguard against this by providing the trip latch 77 with an over-throwpreventing shoulder 81 (see Figs. 2", 9 and 10) which shoulder is formedadjacent to the tripping nose 76. In the normal operation of thetransfer, the the shoulder 81 and is pressed against the tripping nose76 and thereby trips the trip latch from under the fixed rod 261;however, if the machine is operated violently in the manner beforedescribed and the tripping pin 80 is given an overthrow movement, thetrip latch 77 is nevertheless prevented from being driven ahead of thetripping pin 80 upon such overthrow movement by reason of the fact thatas soon as the tripping nose 76 begins to leave the pin 80 the shoulder81 immediately comes up against the underside of the pin 80, and thetrip latch therefore cannot move forward unless the pin (and thereby theentire registering wheel) is moved with it; and in such cases theregistering wheel never has an overthrow movement to such a great extentas to allow the tripping pin completely to trip the latch. Furthermore,when the registering wheel settles back to its 9 position afteroverthrow, against the shoulder 81 and carries the tripping latch backwith it to its proper position.-

The above described transfer devices relate only to the primary countingwheels or those receiving motion directly from the registering segments26. In order, however, to give the machine capacity for registraion oftotal amounts, registering counter with adding wheels of higherdenomination such as is customary in such a machine. The number of suchhigher adding wheels may be regulated at will according to the desiredcapacity but I have shown three of such wheels 87 (see Fig. 1) mountedloosely upon the counter shaft 74. It is of course necessary to havesome sort of transfer device between these adding wheels 87. Thistransfer may be effected by means of intermediate transfer pinions 91(see Fig. 6) and locking star Wheels 92 which are mounted up .1 asuityoke shaped disengaging frame 90 suitably pivoted in the counterframe on a short transverse shaft 90 However, since this part of thetransfer mechanism between wheels of higher denomination constitutes nopart of my invention and since various devices are well known in the artto accomplish this purpose, I have not shown nor shall I describe suchmechanism in detail, any one of the various forms being suitable for thepurpose.

Tuwt-to-zero.The resetting devices for turning the counter wheels tozero are all operated byturning the thumb button 110 the pin 80 abutstripping pin 80 passes over I have provided my (see Fig. 1). This thumbbutton. is fast upon the turn-to-zero shaft 74 which extends through theside frame of the machine and is journaled atthe other end in thecounter frame and at this end has fast upon it a pinion 330. (See Fig.6). This pinion 330 meshes with a pinion 331 which is fast upon theleft-hand end of the counter shaft 74. Fast upon the pinion 330 is alocking cam disk 332 which engages a similar locking cam disk 333 fastupon the pinion 331. The shape of these locking cams is better shown inFig. 8, the upper cam 333 being formed with a concave sliding surface,

and the lower cam 332 being formed with a corresponding convex slidingsurface, adjacent to which however is a projecting nose 334, the purposeof which formation will appear hereinafter. Each of the pinions 330 and331 has ten teeth, but the pinion 330 is larger in diameter than pinion331 and is so constructed as to have one missing tooth. The normalposition of the turn-to-zero device is as shown in Fig. 6, but onbeginning to turn the pinion 330, by means of the thumb button 110, inthe direction shown by the arrow in Fig. 6, the lower pinion 330 isgiven an initial movement (on account of the missing tooth) before thepinion 331 starts to rotate. Thus the projecting nose 334 of the camdisk 332 is carried beyond the center of the concave surface of the camdisk 333 and therefore the cam disks are no longer in locking positionbut the pinion 331 and its cam disk 332 carried thereon are now free tomove and the lower corner 335 of the disk 333 swings down behind themoving disk 332 and is not obstructed thereby. As soon as the pinion 330has made one complete rotation the cam disks 332 and 333 are againbrought into their normal locking position, but the shape of the upperedge of the camdisk 332 is such (as shown in Fig. 8) that the cam disk333 is given a slight retrograde movement at the end of the revolutionof the disk 332. This result is accomplished by reason of the fact thattoward the end of the revolution of the disk 332, the projecting nose.334 formed on said disk contacts with the lower corner 335 of the disk333 and thereby cams this disk 333 and therefore the pinion 331)backward or a slight retrograde movement. This retrograde movement ofthe pinion 331 is possible since at this point there are no teeth of thepinion 330 in contact with the the pinion 330. The purpose of suchslight overthrow movement of the pinion 331 and the slight retrogrademovement will now be explained. As before stated, the pinion 331 is fastupon the counter-shaft 74. This shaft 74 has formed in it a longitudinalgroove 94, (see Figs. 9 and 10), and the radial wall of this grooveengages spring pressed pawls 94*, which pawls are carrie one.upon eachcounter wheel, and thus the said counter wheels will be picked up andturned to zero 111 a manner the general features of which are wellknown'in the art. It is therefore evident that if the pinion 331 isgiven a slight overthrow movement at the end of its revolution, theshaft 74 will cause the counter wheels to be carried slightly beyondtheir zero position whereby the retaining-pawls 79 will be insured ofdropping behind their respective ratchet wheels; and then the slightretrograde movement of the pinion 331 will cause the counter wheels tobe brought back against their retaining pawls and into proper alinement.

By this means I have obviated the necessity of the nicety of adjustmentto carry the counter wheels to their zero positions and have theretaining pawls drop into place, and furthermore I have insured apositive retrograde movement of the counter wheels back to their correctpositions against the retaining pawls and thereby it is impossible forthe counter wheels to remain overthrown to such an extent that the teethof their respective gear wheels would bind against the teeth of theoperating segments 26 and thereby prevent the machine from registering.I have also provided the pinion 330 with means for disengaging theintermediate transfer mechanism for the wheels 87 of higherdenomination. Fast upon the pinion 330, and on the opposite side from-the lock'- ing disk 332 is a cam disk 340 (see Flg. 7) which engagesthe. lower end of the disengaging frame 90 and swings the same forwardon the first part of the movement of the pinion 330 thereby carrying thetransfer pinion 91 and the locking disk. 92 out of mesh with the counterwheels 87 and allowing them to be turned to zero; and the transferpinion 91 and locking wheel 92 are held from turning upon this forwardmovement by means of the retaining pawl 91 wf ch is made fast to thecounter frame. Upon the end of the rotation of the pinion 330 the pin341 (see Figs. 6 and 8), mounted upon the locking disk 332,-engages anarm 342 fast upon the disengaging frame 90and'carr1es the disengagingframe forward into the normal position with the transfer pimons and starwheels in contact with their respective counter wheels. It will also beobdisengaging frame 90 to be swung forward upon the action of the cam340.

On the turning to zero of the primary counting wheels 72, 76 and 77, itwill be noticed that the transfer tripping pins 80 carried upon thesewheels (see Fig. 2) do not trip the trip latches 77 since these arenormally held retracted in inoperative position and out of the path ofmovement of said tripping pins. Thus on such turning tozero of thecounter, it is not necessary to displace the primary transfer pawls ortrip latches, such as is necessary in some ma- .chines where thetransfer pawls or trip latches are normally in operative position.

Since the operator might neglect to give a complete rotation to thethumb knob 110 and thus would neglect to return the counter wheelscompletely to zero, I provide a means to insure a complete rotation ofthe shaft 74. Mounted fast upon this shaft upon the inner side of theside frame of the machine is a disk 350 (see Figs. 1 and 5) which hasformed in it a locking notch, and an arm 351 fast upon the lid 352 ofthe casing of the machine, is so situated as to engage the notch of thedisk 350 and in case the disk 350 has not been given a complete rotationthe lower side of the arm 351 will engage the corresponding upper sideof the said notch and carry the disk 350 home to its position ofcomplete rotation. It is also to be observed that this arm 351 serves tolock the disk 350 from rotation while the lid 352 is in its normallyclosed position and thereby it is impossible to set the machine to zerowhile the lid 352 is closed.

In Fig. 12 I have shown a modified form of the arm 351 attached to thelid 352 which modified form embodies the advantages of insuring acomplete returning to zero of the counter wheels and a locking of theturn-tozero device while the lid is closed and also serves to give thecounter wheels the slight overthrow movement followed by the slightretrograde movement which is desirable in such turn-to-zero devices asbefore described. In this case, as shown in Fig. 12, the counter shaft'74 is extended through to the side frame of the machine and isjournaled therein and carries a disk 350 corresponding 'to thepreviously mentioned disk 350 and this disk 350 has formed in it a notch350". Extending downward from thelid 352 is a peculiar shaped arm 351which is adapted to engage the notch 350 and the shape of which is bestshown in dotted lines in Fig. 12. When the shaft 74 has been rotated onthe turning to zero of the counter, then upon the closing of the lid352, the finger 353 of the arm 351 comes in contact with the rearwardside 35 1 of the notch 350 and carries the disk 350 onward a smallamount in the same direction of rotation as shown by the arrow (Fig.12), thus imparting a slight overthrow movement to the shaft 74. Then atthe completion of the downward movement of the lid, the inclined surface355 of the arm 351 comes in contact with the forward surface of thenotch 350 and forces the-disk 350 backward from its overthrow positionto its normal position as shown in full lines in Fig. 12, thus impartingto the shaft 7-1 the desired retrograde movement above referred to. Itis also evident that this arm 35l serves to lock the turn-tozero devicefrom operation while the lid is closed and thus there is combined inthis one device the means for giving the tur,n-to-zero device a slightoverthrow movement followed by a slight retrograde movement and also ameans of locking the turn-to-zero device while the lid is closed. Ofcourse when the proprietor or clerk wishes to reset the machine to zero,he must first raise the lid 352 before the turn-to-zero device will beunlocked, and then on closing the lid the complete turning to zero ofthe counter is insured and the devices again locked as above described.The lid which I have described may well be the one which is used on cashregisters to expose the registering wheels to view, but these devices asabove described for completing the turn-to-Zero movement and for lockingthe shaft may as well be controlled by any other guard or movable plate,such, for example, as the one which the proprietor customarily moves inexamining the condition of the machine or in preparing the machine foruse in any way. I have also provided a means for automatically stoppingthe turn-to-zero device at the end of one complete revolution, so thatthe counter wheels cannot again be turned to zero until a key has beenoperated. Fast upon and projecting laterally from a disk 356 fast on theturn-to-zero shaft 74 is a pin 370. (See Figs. 1 and 5.) Resting abovethis pin is a hooked arm 371 which is suitably pivoted upon a shaft 372extending from the side arm of the machine and is slotted at its pivotedconnection so that it may have a backward movement under the tension ofa spring 373. This arm 371 normally rests upon the transverse shaft 24which, as before described, is carried upward with the counter engagingframe 25 at each operation of the machine. After the counter wheels havebeen set to zero the pin 370 contacts with the hook of the arm 371, andthe disk 356, (and thereby pin from forward movement and the counterthen can again be set Is pivoted as at 124 upon the main frame itsopposite end with an and is formed at elongated slot through which abolt 125 passes to secure that end of the plate movably to the-mainframe, A screw or bolt 126 is mounted in the standard 122 and is formedwith an upperthumb nut by which the bolt may be screwed downward. Formedtension of its sp passes out of alinement I sible to insert a wire thecasing through which in the mam frame below thebolt 126 is a recess 12?having an inclined face and when the said boltis screwed downward, theend thereof comes in contact with this inclined ace and the bell isthereby swung upon its pivot 124 against the tension of a compressionspring 128, into the path of action of the bell clapper 129. ThlSclapper is suitably pivoted-to a bracket hung from the main frame and isnormally drawn forward by a coiled spring 130 which connects it to themain frame. The lower end of the clapper or hammer is formed with alateral projection 131 which is arranged to be struck by an arm 132 fastto the shaft 20. As the key-coupler rises, the arm 132. is rockeddownward and contacting with the projection 131 draws the clapper backagainst the ring. When the shaft 20 moves laterally at the end of theupward stroke of the coupler, the arm 132 then with the projection 131,and the clapper is free to spring forward and strike the bell. Duringthe backward movement of the key-coupler, the arm 132 passes free of theprojection 131.

Key guawis-ln some of the so-called key machines heretofore used, it hasbeen pos through the slots in the key-shanks project, and it was therebypossible to manipulate the machine. To prevent this, I have providedeach-key lever with curved arms 310 extending vertically on either sideof the key-shank (see Fig. 5.) These curved scribed in a prior arms areformed concentric with the pivotal point of the keys namely, the shaft5, and are at such distance from said shaft that they fill up andproject slightly through the slots 311 in the casing, through whichslots the keys project. It is thus obvious that regardless of whatposition the key may be in, these curved arms serve to fill up theexposed space in the slot and thereby prevent the insertion of any wireinto the same.

Certain of the inventions contained in the machine, set forth in thepresent application are also embodied inthe machlne deapplication filedby me on Sept. 20, 1898, Serial No. 692,298 and it is intended to claimbroadly in said. prior member, to connect the frame; means carriedthereby for actuating the accounting mechanism, normally disconnectedtherefrom and arranged to be differentially operated by "the keys; meansfor moving the said frame by the rocking of the commonmember, to connectthe accounting mechanism with its actuating means; and means forlaterally shifting the said common member by its co-action with themovable frame, substantially as and for the purpose described.

2. In a cash register, the combination with a series of keys, of alaterally shiftable rocking member common to and actuated by the keys;an accounting mechanism; a movable frame; means carried thereby foractuating the accounting mechanism, normallydisconnected therefrom andarranged to be dif; ferentially operated by the keys; means for movingthe said frame by the rocking of the commonmember, to connect theaccounting mechanism with its actuating means, and for supporting thelatterin its displaced position.

3. In a cash register, the combination with a series of keys, of alaterally shiftable rocking member common to and actuated by the keys;an accounting mechanism; a movable frame; means carried thereby foractuating the accounting mechanism, normally disconnected therefrom andarranged to be differentially operated by thekeys; means for movingthesaid frame by the rocking of the common accounting mechanism with itsactuating means; and means for laterally shifting the said commonmeniber first in one direction and then in the opposite direction by itsco-action with the movable frame.

4. Ina cash register, the combination with a'series of keys, of alaterally shiftable rock ng member common to and actuated by the keys;an accountingmechanism; a movable frame; means carried thereby foractuating the accounting mechanism, normally disconnected therefrom andarranged to be differentially operated by the keys; means for the movingof said frame by the rocking of the common member, to connect theaccounting mechanism with its actuating means, and means for laterallyshifting the said common member by its co-action with the movable frame,

rocln'ng member common to an by said keys, a rock-frame, registeractuatsaid means comprising reversely disposed cams on the rocking frameand cooperating projections on the common member substantially asdescribed.

5. In a cash register, the combination with a series of keys, of alaterall movable actuated cam on said rock-frame, an arm on said commonmember adapted to engage said cam on the rock-frame to laterally shiftsaid common member and tosupport said frame after the common member hasbeen shifted, a counter, and counter operating devices mounted on saidrock-frame and adapted to scribed.

7. In a cash register, the combination with a series of keys, a counter,means for actuating the same from the keys, and transfer devices forsaid counter of a member which is common to and moves with the saidkeys, with provisions between said member and the said transfer devicesfor positively 1 actuating the latter during movements of" saidmember inopposite directions.

8. In a cash register, the combination with a series of keys, a counterand transfer devices therefor, of a laterally shifting memher which iscommon to and moves with said keys in two opposite directions and whichoperates the said transfer devices on both said movements in oppositedirections.

9. In a cash register, the combination with a series of keys, a counterand transfer devices therefor, of an oscillating member common to saidkeys, means for laterally shifting said member, and operating devicesmounted upon said member and co-acting.

with said transfer devices in both directions of oscillation of saidmember.

10. In a cash register, the combination with a series of keys and acounter including a transfer element; of a transfer pawl controlled asto operative adjustment by said transfer element; and an oscillatingmember commonto and moving with said keys and having an arm adapted tooperate said transfer pawl in both directions of oscillation of saidmember. a

11. In a cash register,. the combination with a series of'keys, andacounter including transfer elements; of a;transferpawl, an oscillatingmember common to and moving" with said keys, means for laterallyshifting said oscillating member, and a single arm carried by the latteradapted to operate the said transfer pawl in both directionsof'oscillation of said member.

12. In a cash register, the combination with a series of keys, and acounter having transfer elements; of a transfer pawl, two arms connectedwith said transfer pawl, a

laterally shifting oscillating member common to and actuated by saidkeys, a single arm carried upon said member adapted to.

act successively on the two arms of the said transfer pawl. y

13. In a cash register, the combination with a seriesof keys, of acounter having transfer elements and a transfer pawl, two

arms connected with said transfer pawl, a

laterally shifting oscillating member common to and actuated by saidkeys, and a single arm carried upon said member adapt-,

ed to act upon one of said arms of the transfer pawl during the movementin one direction, and to act upon the other arm of said transfer pawlduring the movement in the op- -posite direction of said oscillatingmember. be actuated by the keys substan-tlally as de- '14. In a transfermechanism, the combination with the registering wheels, actuating;mechanism therefor, a transfer pawl, and means for reciprocating thesame of means 3 for tripping the transfer pawl, with provisions existingby virtue of which the latter normally remains out of cooperativerelation with the tripping mechanism.

15. In a transfer mechanism, the combination with the register wheels,actuating mechi anism therefor, a transfer pawl, and means forreciprocating the same; means for tripping the transfer pawl, withprovisions existing by virtue of which the latter normally remains outof cooperative relation with the tripping mechanism, and means formoving said transfer pawl into operative relation with respect to thetripping mechanism upon the initial movement of the counter operating.mechanism.

16. In a cash register, the combination with a series of keys, acounter, means for actuating the latter from the keys, and a transferpawl of means for tripplng the transfer pawl, with provisions existingby virtue of which the latter remains out of cooperative relation withthetripping mechanism; and a'member common to and operated by said keys;and means operated by said common member to move said transfer pawl intooperative relation with said tripping means upon the initial movement ofsaid member and to move the said transfer pawl out 6f 0 erative relationwith said tri ping means uringthe final movement 0 said common me her.

17. In a transfer mechanism, the combination with the registeringwheels, actuating mechanism therefor, a transfer pawl, and

means for reciprocating the same; of a triplatch mounted upon said pawland normally holding the same in inoperative adjustment; and means fortripping the transfer pawl by, displacement of the trip-latch, thelatter I eing normally ininoperative relation to the tripping means. i

--18. In a transfer mechanism, the combination with the registeringwheels, actuating mechanism therefor, a transfer pawl, and means forreciprocating the same; of a trip-latch mounted upon said transfer pawland normally holding the same in inoperative adjustment; means fortripping the transfer pawl by displacement of the triplatch, the latterbeing normally in inoperative relation to the tripping means; and

means for moving said trip-latch into opera- "mechanism therefor,

- tive relation with tive relation with respect to the tripping meansupon the initial movement of the counter operating mechanism.

19. In a register, the combination with a counter having transferelements, actuating a transfer pawl and means for reciprocating thesame; of a triplatch mounted on said pawl and normally engaging a fixedabutment to maintain said pawl inoperative as to effecting ,a transfer,the normal position of said pawl being such that the said latch isretracted from operative relation with the tripping element on thecounter.

20. In a register, the combination with a counter having transferelements, actuating mechanism therefor, a transfer pawl and means forreciprocating the same; of a triplatch mounted on said pawl and normallyengaging a fixed abutment to maintain said pawl inoperative as toeffecting a. transfer, the normal position of said pawl being such thatthe said latch-1s retracted from operathe tripping element on thecounter; with provisions carried by said trip-latch for preventingpremature tripping of the same by an overthrow movement of said trippingelement.

21. In a register, the combination with a counter having transferelements, actuating mechanism therefor, a transfer pawl and means forreciprocating the same; of a triplatch mounted on said pawl and normallyengaging a fixed abutment to maintain said pawl inoperative as toeffecting a transfer, the normal position of said pawl being such thatthe said latch is retracted from operative relation r ith' the trippingelement on the counter; with provisions carried by said trip-latch forpreventing premature tripping of the same by an overthrow movement ofsaid tripping element; and means for restoring said trip-latch from itstripped positlon to its normal position in with said fixed a utment.

22. In 'a cash register, the combination with a series of keys,'of alaterally moving engagement key-coupler common to said keys; an arresterrack mounted upon said coupler; an arrester pawlnormally in the path ofsaid rack and adapted to prevent the movement thereof in one direction;a second arrester pawl adapted to engage said rack only when thekeycoupler has been shifted and to prevent the movement of said rack inthe opposite direction; and means for shifting said keycoupler.

23. In a cash register, the combination with a series of keys and alaterally shifting arrested key coupling member having a main arresterrack and an auxiliary arrester rack; means for shifting said member; anarrester pawl normally in the' path of engagement with the main rack andadapted to prevent the movement thereof in one direction; a secondarrester pawl normally out of the path of engagement with said mainrack, but adapted to be brought into engagement therewith when the saidar- 1 rested member is shifted and adapted to prevent the movementthereof in the opposite direction; and an auxiliary arrester pawladapted to engage said auxiliary rack and to remain in engagementtherewith while the said arrested member is being shifted.

24. In a cash register, the combination with a series of keys anarrested key coupling member, of an arresting member normally in theplane of engagement withsaid' arrested member and adapted to prevent themovement in one direction thereof; and a second arresting membernormally out of the plane of engagement with said arrested member andadapted when in engagement therewith to prevent the movement thereof inthe opposite direction; and means for shifting the relative positions ofsaid members whereby the second arresting member is brought into theplane of engagement with the arrested member and the first arrestingmember is brought out of the plane of engagement with said arrestedmember.

In a cash register, the combination with an arresting member, of aseries of keys an arrested key coupling member, and means for shiftingone of said members laterally to carry the same out of confrontingalinement with the other member.

26. In a cash register, the combination with an arresting member, of aseries of keys an arrested key coupling member normally in operativealinement with said arresting member and confronting the same, and meansfor moving one of said members laterally to carry the same out ofconfronting alinement with the other member.

27. In a cash register, the combination of a series of keys an arrestedkey coupling member having a main arrester surface and an auxiliaryarrester surface, two pawls adapted to engage the main arrester surface,and a third arrester pawl adapted to transfer devices in both directionsof oscillation.

9.9. In a cash register, the combination with a plurality of keys, of acounter controlled thereby, transfer devices, an oscillating transferoperating member movable with the keys, means for laterally shifting thesame, and operating devices on said member co-acting with the transferdevices in both directions of oscillation.

30. In a cash register, the combination with a counter, transferdeviceswith two arms in different planes, an oscillating transfer operatingmember, means laterally shifting the member at each operation, andoperating devices pivoted on said member adapted to co-act with therespective arms in the respective directions of oscillation.

31. In a cash register, the combination with a plurality of keys, of acounter controlled thereby, transfer devices for said counter with twoarms in different planes, an oscillating transfer operating membermovable with the keys, means for laterally' shifting said member, andoperating devices pivoted on said member adapted to co-a'ct with theseparate arms in opposite directions of oscillation.

32. In a cash register, the combination with a counter, of transferpawls therefor, trip pawls normally out of operative 'relation with thecounter, means for moving the trip pawls into position to co-act withthe counter ateach operation, and means for reciprocating the transferpawls at each operation of the machine. 1

33. In a cash register, the combination with a counter, of transferdevices therefor, trip pawls, pins on the counter for operating same,and a projection on the trip pawl for locking the same to the pin duringthe tripping movement of the. pin.

Set. In a cash register, the combination with a counter, transfer pawlstherefor, trip pawls carried thereby, said pawls being surface, sub- Ynormally held out of operative relation with the counter, means formoving the transfer pawls to carry the trip pawls into position toco-act with the counter, means for operating the transfer pawls, and astationary projection for resetting the trip pawls after the operationof the counter.

35. In a cash register, the combination with a counter, of transferpawls therefor, trip pawls carried by said transfer pawls, and tripdevices on the counter for operating the trip pawls, the trip pawlshaving provisions for preventing the trip of same by an overthrow of thecounter.

36. In a cash register, the combination with a series of keys anarrested key coupling member, two oppositely directed pawls mountedindependently of said member, a rod on which said pawls are pivoted, andmeans for shifting the arrested member to bring one or the other of thepawls into operative relation therewith.

37. In a cash register, the combination wit-h a plurality of keys, witha key coupling member common thereto and movable therewith, and having arack, pawls preventing motion of the rack in reverse direction, andmeans for shifting the rack to bring it into operative relation with oneor the other of the pawls.

38. In a cash register, the combination with a counter, of registeringracks, a shaft on which the racks are mounted, means for moving theshaft to carry the racks into and out of mesh with the counter, andmeans for completely restoring the racks to normal position.

39. In a cash register, the combination with a series of keys anarrested key coupling member, of two oppositely directed pawls, a rod onwhich said pawls are pivoted, and means for shifting the arrested memberfrom one to the other of two different planes of movement to engage oneor the other of said pawls.

In testimony whereof I affix my signature, in the presence of twowitnesses.

THOMAS CARROLL.

IVitnesses:

H. C. WOOD, J. B. HAYWARD.

